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Finding the Fourth Proportional to 339,693.60, 509,542.20 and 103,036.50

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Solution

The fourth proportional to 339,693.60, 509,542.20 and 103,036.50 is: 154,555.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,693.60 : 509,542.20 = 103,036.50 : x
  2. Step 2: Convert to fraction form
    339,693.60/509,542.20 = 103,036.50/x
  3. Step 3: Cross multiply
    339,693.60x = 509,542.20 × 103,036.50
  4. Step 4: Simplify right side
    339,693.60x = 52,501,444,890.30
  5. Step 5: Solve for x
    x = 52,501,444,890.30/339,693.60
  6. Step 6: Final answer
    x = 154,555.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.